1X/1.5X/2X Charge Pump White Driver Main Sub-Displays ±1.5% Curre

The Datasheet Archive - 100 Million Datasheets from 7500 Manufacturers.

1X/1.5X/2X Charge Pump White Driver Main Sub-Displays ±1.5% Curre

Datasheet Thumbnail

Top Searches for this datasheet

APW7001
1X/1.5X/2X Charge Pump White Driver Main Sub-Displays
±1.5% Current Matching Powers Main Sub-Display LEDs High Efficiency Over Li-ion Battery Discharge Output Current 30mA 2.7V 5.5V Operating voltage 1x/1.5x/2x Charge Pump Modes Shutdown Current: maximum Input Ripple Internal Soft-start Limits Inrush Current Short Circuit Current Limit Thermal Shutdown Protection Output Overvoltage Protection 16-pin Package Lead Free Available (RoHS Compliant).
General Description
APW7001 high efficiency charge pump white driver; device drives four white LEDs main display white LEDs sub-display with regulated constant current uniform intensity. supply voltage ranges from 2.7V 5.5V optimized Li-ion battery application. APW7001 operates 1.5x charge pump modes automatically switches charge pump modes depend input voltage maintain required power high power efficiency. APW7001 provides 30mA allows several methods such signals main-display dimming sub-display dimming. control logic pins, ENS, allow disabling enabling main sub-displays. supply current only mode, kept 20ms will allow device enter shutdown mode with quiescent current. APW7001 features current limit short circuit protection. APW7001 switches 1MHz frequency only requires four ceramic capacitors resistor, ensures input current ripple EMI. APW7001 available 16-pin package.
Applications
Cellular Phone White Back light Portable device PDA, Handheld computer
Pinouts
ILED4 ILED3 ILED2 ILED5 ILED6 ISET VOUT Metal (Bottem) C1C1+ C2ILED1
APW7001 QFN-16 View
ANPEC reserves right make changes improve reliability manufacturability without notice, advise customers obtain latest version relevant information verify before placing orders. Copyright ANPEC Electronics Corp. Rev. Oct., 2006 www.anpec.com.tw
APW7001
Ordering Marking Information
APW7001 Lead Free Code Handling Code Temp. Range Package Code Package Code Operating Ambient Temp. Range Handling Code Tray (for only) Lead Free Code Lead Free Device Blank Original Device XXXXX Date Code
APW7001
APW7001 XXXXX
Note: ANPEC lead-free products contain molding compounds/die attach materials 100% matte plate termination finish; which fully compliant with RoHS compatible with both SnPb lead-free soldiering operations. ANPEC lead-free products meet exceed lead-free requirements IPC/JEDEC STD-020C classification lead-free peak reflow temperature.
Block Diagram
C1C2+
SOFT-START
1x/1.5x/2x MODE CHARGE PUMP GATE CONTROL LOGIC
VOUT
CURRENT LIMIT 1.2V ILED1 ILED2 ILED3 ILED4 ILED5 ILED6
CONTROL MAIN CONTROL 1MHz OSCILLATOR CONTROLLED CURRENT MIRROR
0.18V
0.1V MODE SELECT ILED SELECT
Error ISET
Copyright ANPEC Electronics Corp. Rev. Oct., 2006
1.2V
www.anpec.com.tw
APW7001
Absolute Maximum Ratings
Symbol VOUT VOUT Parameter Rating -0.3 -0.3 -0.3 -0.3 -0.3 -0.3 +150 Unit
VC1+, VC1-, VC2+, VC2- C1+, C1-, C2+, VILED1-6 VENM, VENS VISET TSTG TSDR VESD ILED1-6 ENM, ISET Maximum Junction Temperature Storage Temperature Soldering Temperature Seconds) Minimum Rating
Note Stresses beyond absolute maximum rating damage device operating absolute maximum rating conditions extended periods affect device reliability. Note maximum allowable power dissipation (ambient temperature) calculated using: (max) J=125°C. Exceeding maximum allowable power dissipation will result excessive temperature.
Recommended Operating Conditions
Symbol VOUT ILED Input Voltage Output Voltage Current Output Current, VIN>3.5V, VF=3.1V, mode IOUT Output Current, 3.5V<VIN>3.1V, VF=3.1V, 1.5x mode Output Current, 3.1V<VIN>2.8V, VF=3.1V, mode Ambient Temperature Parameter Rating Unit
Thermal Characteristics
Symbol Parameter Thermal Resistance Junction Ambient QFN-16
Value
Unit °C/W
www.anpec.com.tw
Copyright ANPEC Electronics Corp. Rev. Oct., 2006
APW7001
Electrical Characteristics
2.85 5.5V, (ESR 0.03), ILED 20mA, -40°C +85°C, unless otherwise noted. Typical values +25°C.
Symbol VUVLO
Parameter Input Voltage Under-voltage Lockout Threshold Under-voltage Lockout Hysteresis Quiescent Current
Test Conditions
APW7001 Min. Typ. Max.
Unit
falling
1.5x/2x mode switching mode EN=0 ILED-ERR Current Accuracy Current Matching IISET ISET Current ISET Current Ratio VILED-TH ILED Threshold Voltage 1.5x mode mode Transition Hysteresis mode 1.5x mode Transition Hysteresis FOSC Switching Frequency ROUT ISHORT VOVP ILED (1.2V/RSET) 5mA<ILED<30mA, +25°C VILED falling rising, VIN-VOUT rising, VOUT-VIN mode (VIN-VOUT) IOUT Open Loop VOUT Resistance 1.5x mode (1.5xVIN-VOUT) IOUT mode (2xVIN-VOUT) IOUT Short Circuit Current Limit Output Over Voltage Protection Logic Pins High Threshold Logic Pins Threshold Logic Pins High Current Logic Pins Current Thermal Shutdown Thermal Shutdown Hysteresis
Note current accuracy defined (ILED-MEASURED ILED-SET) ILED-SET Note current matching defined (ILED-MAX ILED-MIN) (ILED-MAX ILED-MIN)
Copyright ANPEC Electronics Corp. Rev. Oct., 2006
±1.5
1000
5mA<ILED<30mA (Note 5mA<ILED<30mA (Note
VOUT
VIH=VIN VIL=GND
www.anpec.com.tw
APW7001
Typical Application Circuit
COUT
ILED4 ILED3 ILED2 ILED1 ILED5
ILED6 APW7001 ISET VOUT
Digital Inputs
Battery
RSET
Function Descriptions
Name ILED5 ILED6 ISET VOUT C2C1+ C1GND ILED4 ILED3 ILED2 ILED1
www.anpec.com.tw
Function Descriptions Sub-Display LEDs Cathode Connection. current flows from VOUT through into ILED_ pin. charge pump regulates lowest VILED 180mV. Connect ILED_ VOUT used. On/Off Dimming Control LED1-4 (Main-Display). On/Off Dimming Control LED5-6 (Sub-Display). Current Input. Connect resistor from ISET current. VISET typically 1.2V. Output Voltage Pin. Connect VOUT anodes. Connect capacitor from VOUT GND. Supply Voltage Input Pin. Connect capacitor from GND. Bucket Capacitor1 Positive Terminal. Connect capacitor from C2-. Bucket Capacitor1 Negative Terminal. Connect capacitor from C2-. Bucket Capacitor1 Positive Terminal. Connect capacitor from C1-. Bucket Capacitor1 Negative Terminal. Connect capacitor from C1-. Device Ground Pin. Main-Display LEDs Cathode Connection. current flows from VOUT through into ILED_ pin. charge pump regulates lowest VILED 180mV. Connect ILED_ VOUT used.
Copyright ANPEC Electronics Corp. Rev. Oct., 2006
APW7001
Typical Characteristics
Efficiency Input Voltage
Efficiency Input Voltage
Efficiency
LEDs 20mA =3.1V
Efficiency
LEDs 15mA =3.1V
Input Voltage
Input Voltage
Efficiency Input Voltage
Efficiency Input Voltage
Efficiency
LEDs 20mA VF=3.3V
Efficiency
LEDs 15mA =3.3V
Input Voltage
Input Voltage
Copyright ANPEC Electronics Corp. Rev. Oct., 2006
www.anpec.com.tw
APW7001
Typical Characteristics (Cont.)
Input Current Input Voltage
LEDs 20mA
Input Current Input Voltage
LEDs 15mA
Input Current (mA)
Input Current (mA)
Input Voltage
Input Voltage
Current Input Voltage
LEDs 20mA
Current Input Voltage
LEDs 15mA
Current (mA)
Current (mA)
Input Voltage
Input Voltage
Copyright ANPEC Electronics Corp. Rev. Oct., 2006
www.anpec.com.tw
APW7001
Typical Characteristics (Cont.)
Current Temperature
LEDs 20mA VIN=4V, mode
Current Temperature
LEDs 20mA VIN=3.3V, 1.5x mode
Current (mA)
Current (mA)
Temperature (°C)
Temperature (°C)
Current Temperature
LEDs 20mA VIN=3V, mode
Quiescent Current Input Voltage
LEDs 15mA VF=3.3V
Quiescent Current (mA)
Current (mA)
Temperature (°C)
Input Voltage(V)
Copyright ANPEC Electronics Corp. Rev. Oct., 2006
www.anpec.com.tw
APW7001
Typical Characteristics (Cont.)
Quiescent Current Temperature
mode VIN=4V
Logic Threshold Voltage Input Voltage
Logic Threshold Voltage
Quiescent Current (mA)
high threshold
threshold
Temperature (°C)
Input Voltage
Switching Frequency Input Voltage
1200
Switching Frequency Temperature
1200 mode VIN=4V
Switching Frequency (kHz)
1100 1050 1000
Switching Frequency (kHz)
1150
mode
1100 1000
Input Voltage
Temperature (°C)
Copyright ANPEC Electronics Corp. Rev. Oct., 2006
www.anpec.com.tw
APW7001
Typical Characteristics (Cont.)
StartUp mode
(100mA/div) LEDs 20mA F=3.1V,
StartUp 1.5x mode
LEDs 20mA VF=3.1V, VIN=3.3V
(200mA/div)
VOUT (2V/div)
VOUT (2V/div)
ENS=ENM (5V/div)
ENS=ENM (5V/div)
ILED (20mA/div)
ILED (20mA/div)
TIME (0.1ms/div)
TIME (0.1ms/div)
StartUp mode
Dimming mode
ILED (20mA/div)
(200mA/div) LEDs 20mA =3.1V, =2.7V
LEDs 20mA, =3.1V, VOUT (1V/div) f=200Hz, ENS=high
VOUT (2V/div)
ENS=ENM (5V/div)
(2V/div)
ILED (20mA/div)
TIME (0.1ms/div)
TIME (2ms/div)
Copyright ANPEC Electronics Corp. Rev. Oct., 2006
www.anpec.com.tw
APW7001
Typical Characteristics (Cont.)
Dimming 1.5x mode
ILED (20mA/div)
Dimming mode
ILED (20mA/div)
LEDs 20mA, =3.1V, VOUT (1V/div) =3.3V, f=200Hz, ENS=high
LEDs 20mA, VF=3.1V,
(1V/div)
VIN=2.7V, f=200Hz, ENS=high
(1V/div)
(1V/div)
TIME (2ms/div)
TIME (2ms/div)
Even with Open Circuit
Line Transient Response 1.5x mode
LEDs 20mA, =3.1V VIN=3.2V 3.8V
ILED (10mA/div)
(1V/div)
VOUT (1V/div)
(1V/div)
(1V/div)
LEDs 20mA F=3.1V, LED1 open
ILED (20mA/div)
TIME (0.2ms/div)
TIME (0.1ms/div)
Copyright ANPEC Electronics Corp. Rev. Oct., 2006
www.anpec.com.tw
APW7001
Typical Characteristics (Cont.)
Line Transient Response 1.5x mode
LEDs 20mA, =3.1V IN=2.8V 3.4V
(1V/div)
(1V/div)
ILED (20mA/div)
TIME (0.1ms/div)
Copyright ANPEC Electronics Corp. Rev. Oct., 2006
www.anpec.com.tw
APW7001
Function Descriptions
Soft-Start APW7001 provides soft-start function limit inrush current during startup. input voltage supplied device, exceeds UVLO voltage, output capacitor charged directly from input with limited current source. Approximate 100us after output voltage approaches input voltage, device starts provide programmed current determines which 1.5x mode required. programmed current reached with mode, soft-start completed device operates mode. When programmed current cannot reached, charge pump goes into 1.5x mode. 1.5x mode charge pump cannot suffice current need, charge pump will switch mode. Mode Transition APW7001 operates 1.5x charge pump modes automatically switches charge pump modes depend input voltage maintain required power high power efficiency. APW7001 operates mode, VOUT pulled When decreases, ILED will decease maintain regulated current. Until VILED below 100mV, device will switch 1.5x mode. 1.5x mode VILED regulated 18V, output voltage VF+0.18V. continues decrease until ILED below 100mV again, device will switch mode. When rises reaches approximately VOUT-300mV, APW7001 switches back 1.5x mode. continues rise reaches approximately VOUT+300mV, APW7001 switches back mode. charge pump enough suffice White Li-ion battery application. APW7001 ensures that mode long possible increase efficiency extend operating range using mode. transition voltages from 1.5x 1.5x given VTRANS1X 0.1V (IOUT ROUT1X) VTRANS1.5X 0.1V (IOUT ROUT1.5X)] where forward voltage IOUT output current ROUT1X output impedance mode ROUT1.5X output impedance 1.5x mode ENM/ENS Control Logic Pins APW7001 provides logic input pins enable disable main-display sub-display. When high, VOUT supplied respective LEDs enabled. When low, respective LEDs disabled. both logic pins kept more than 20ms, 7001 enters shutdown mode. shutdown mode, internal control circuits turned quiescent current below 2uA. When device exits shutdown mode, output soft-start function input voltage startup.
(for more than 20ms) (for more than 20ms) Status enters shutdown LED1, turned LED5, turned LED1, turned LED5, turned LED1, turned LED5, turned
Table1. Truth Table
Current Setting Connect resistor from ISET current. ISET voltage 1.2V, current typically times current through ISET resistor. current given
www.anpec.com.tw
Copyright ANPEC Electronics Corp. Rev. Oct., 2006
APW7001
Function Descriptions (Cont.)
Current Setting (Cont.)
RSET 1.2V ILED
APW7001 provides 30mA current device current matching between currents current accuracy ±8%. high accuracy required, using precision surface mount resistor need.
ILED (mA) RSET 16.5
Table2. RSET Value Selection
RSET (Ohm) ILED (mA)
Figure1. RSET Value Current
Over-voltage Protection LEDs failed unused channel connected VOUT, charge pump mode will into mode output voltage will pumped times input voltage. output voltage over 5.5V, over-voltage protection circuit will limit output voltage approximately 5.5V.
Copyright ANPEC Electronics Corp. Rev. Oct., 2006 www.anpec.com.tw
APW7001
Application Information
Capacitor Selection lower input output voltage ripples, both input output capacitors should larger values lower capacitors. However, larger output capacitor values will increase soft-start time. lower charge pump flying capacitors values improve efficiency, lower capacitor values limit LED' currents input voltage. recommended that variation over temperature, such ceramic capacitors with value input capacitor, output capacitor, charge pump flying capacitors. Brightness Control dimming using ENM, or/and first method dimming LEDs apply signal into or/and pins. Figure2 shows application circuit. average current proportional signal duty cycle. Note that frequency signal will affect minimum dimming duty. Figure3 shows current dimming frequency dimming duty, recommend dimming frequency below 10kHz. signal either applied ENS, both inputs tied together signal applied both pins. Table3 shows truth table dimming control. average current calculated following equation:
ILED( ILED(max) toff
APW7001
Figure2. Dimming Application Circuit
f=100Hz LED=20mA mode
Current (mA)
f=40kHz f=50kHz f=10kHz
Dimming Duty
Figure3. Dimming Frequency Current
VOUT
ILED (main) Bright ness (main)
100%
ILED (sub) Bright ness (sub)
Where: ILED(max) programmed current toff time signal time signal
100% 20ms Shutdown
Figure4. ENM/ENS Timing
Copyright ANPEC Electronics Corp. Rev. Oct., 2006
www.anpec.com.tw
APW7001
Application Information (Cont.)
dimming using ENM, or/and (Cont.)
Status LED1, turned LED5, dimming LED1, dimming LED5, turned LED1, turned LED5, dimming LED1, dimming LED5, turned LED1, dimming LED5, dimming
Digital dimming with external NMOS transistors third method dimming LEDs change equivalent resistance RSET with external NMOS transistors. equivalent resistance parallel combinations always connected selected minimum current. Figure6 shows application circuit.
APW7001 ISET
Table3. Truth Table Dimming Control
Analog dimming with analog voltage second method dimming LEDs apply voltage through resistor into ISET pin. variation current proportional variation analog voltage. resistor values chosen correctly, analog control voltage varies output current from full current. Figure5 shows application circuit. equations below calculate required resistor values:
VADJ VISET RSET VISET RSET VISET RSET RSET
Figure6. Digital Dimming Application Circuit
Layout Consideration APW7001 high frequency charge pump white driver requires some care when laying printed circuit board. metal bottom package must soldered connected plane backside through several thermal vias. Place CIN, COUT, close possible reducing switching noise.
Where: VISET 1.2V VADJ analog voltage dimming LEDs RSET equivalent RSET resistance (see Table2).
APW7001 ISET VADJ
Figure5. Analog Voltage Dimming Application Circuit
Copyright ANPEC Electronics Corp. Rev. Oct., 2006 www.anpec.com.tw
APW7001
Packaging Information
QFN-16
Millimeters Min. 0.76 0.00 0.57 0.20 REF. 3.90 3.90 0.25 2.05 2.05 0.650 0.50 0.60 0.020 4.10 4.10 0.35 2.15 2.15 0.154 0.154 0.010 0.140 0.140 Max. 0.84 0.04 0.63 Min. 0.030 0.00 0.022
Inches Max. 0.033 0.0015 0.025 0.008 REF. 0.161 0.161 0.014 0.086 0.086 0.026 0.024
Copyright ANPEC Electronics Corp. Rev. Oct., 2006
www.anpec.com.tw
APW7001
Shipping Tray
Copyright ANPEC Electronics Corp. Rev. Oct., 2006
www.anpec.com.tw
APW7001
Physical Specifications
Terminal Material Lead Solderability Solder-Plated Copper (Solder Material 90/10 63/37 SnPb), 100%Sn Meets Specification RSI86-91, ANSI/J-STD-002 Category
Reflow Condition
(IR/Convection Reflow)
Critical Zone
Ramp-up
Temperature
Tsmax
Tsmin Ramp-down Preheat
Peak
Time
Classification Reflow Profiles
Profile Feature Average ramp-up rate Preheat Temperature (Tsmin) Temperature (Tsmax) Time (min max) (ts) Time maintained above: Temperature Time (tL) Peak/Classificatioon Temperature (Tp) Time within actual Peak Temperature (tp) Ramp-down Rate Sn-Pb Eutectic Assembly 3°C/second max. 100°C 150°C 60-120 seconds 183°C 60-150 seconds table 10-30 seconds Pb-Free Assembly 3°C/second max. 150°C 200°C 60-180 seconds 217°C 60-150 seconds table 20-40 seconds
6°C/second max. 6°C/second max. minutes max. minutes max. Time 25°C Peak Temperature Notes: temperatures refer topside package .Measured body surface.
Copyright ANPEC Electronics Corp. Rev. Oct., 2006 www.anpec.com.tw
APW7001
Classification Reflow Profiles (Cont.)
Table SnPb Entectic Process Package Peak Reflow Temperature Package Thickness Volume Volume <350 <2.5 +0/-5°C +0/-5°C +0/-5°C +0/-5°C
Table Pb-free Process Package Classification Reflow Temperatures Package Thickness Volume Volume Volume <350 350-2000 >2000 <1.6 +0°C* +0°C* +0°C* +0°C* +0°C* +0°C* +0°C* +0°C* +0°C* *Tolerance: device manufacturer/supplier shall assure process compatibility including stated classification temperature (this means Peak reflow temperature +0°C. example 260°C+0°C) rated level.
Reliability Test Program
Test item SOLDERABILITY HOLT Latch-Up Method MIL-STD-883D-2003 MIL-STD-883D-1005.7 JESD-22-B,A102 MIL-STD-883D-1011.9 MIL-STD-883D-3015.7 JESD Description 245°C, 1000 Bias @125°C Hrs, 100%RH, 121°C -65°C~150°C, Cycles VHBM 2KV, 200V 10ms, 100mA
Customer Service
Anpec Electronics Corp. Head Office No.6, Dusing Road, SBIP, Hsin-Chu, Taiwan, R.O.C. 886-3-5642000 886-3-5642050 Taipei Branch 137, Lane 235, Chiao Rd., Hsin Tien City, Taipei Hsien, Taiwan, 886-2-89191368 886-2-89191369
Copyright ANPEC Electronics Corp. Rev. Oct., 2006
www.anpec.com.tw

1X/1.5X/2X Charge Pump White Driver Main Sub-Displays ±1.5% Curre

Top Searches for this datasheet

Other recent searches